Crushing or pulverizing machine



July 2, 1929. w, HUME 1.719.549

CRUSHING OR PULVERIZING MACHINE Filed July 18, 1927 g 1/5/754 1 1637 g f M Iimenfol M Z- Hui/a6 Patented July 2, 1929.

UNITED STATES WALTER REGINALD HUME, OF MELBOURNE, VICTORIA, AUSTRALIA.

GRUSHING OR PULVERIZING MACHINE.

Application filed July 18, 1927, Serial No.

This invention relates to machines for crushing or pulverizing stone, rock, cement and other materials and has for its primary object to provide a simple and etl'icient crush ing machine wherein a combined rolling and percussive action is imparted to the material by medium of a crushing member consisting of a roller which is adapted to be positively rotated about its axis and simultaneously reciprocated side ardly in relation to an opposed crushing member between which and said crushing roller the material to be reduced is fed.

A machine in accordance with the invention enables material to be reduced uniformly and expeditiously to the required degree of fineness and, as will be evident hereafter. permits a machine which is of simple and inexpensive construction having few parts none of which are liable to derangement. Moreover, wear is evenly distributed over the working surfaces of the crushing memhers.

Referring to the drawings which form partof this specification Figure 1 is a side elevation of a machine according to this invention.

Figure 2 is a part sectional plan.

Figure 3 is a View looking on the left hand end of Figure 1.

The invention includes two opposed crushing members 2 and 3. The crushing member designated by the numeral 2 consists essentially of a roller which is free to rotate about its axis and is adapted to he reciprocated in relation to the other crush ing member 3. This crushing member 3 is preferably in the form of a roller, but, if desired, it may consist of a jaw, plate or the like having a substantially straight crushing surface.

The crushing roller 2 may have integral stub axles 4 projecting concentrically from both ends, or the roller 2 may be in the form of a sleeve adapted to fit removably around a shaft or axle the ends of which correspond to said stub axles. These stub axles 4 are accommmlated in bearing blocks 6. To enable the roller 2 to be bodily moved towards and from the opposed crushing member. the bearing blocks 6 may be accommodated in horizontal slideways 7 formed by guides 8 attached to parallel longitudinal members 9 of a framework or supporting structure, said frame members having longitudinally elongated slots 11 to permit the reciprocating 206,711, and in Australia October 9, 1926.

movement of said stub axles 1 and crushing roller. The frame members 9 may he mounted upon joists 12 and may be braced at their ends by transverse plates 13. The left hand plate is omitted frpni Figure 3 for convenience of illustration.

Resilient means such as springs 14 are arranged to yieldingly oppose sideward motion of said crushing roller 2 towards the opposed crushing member and to maintain the roller in driving contact with an operating element, preferably consisting of an cecentric roller 16, disposed, at that side of the crushing roller 2 which is remote from the crushing member 3. In the drawings a spring 14 is provided for each bearing block 6 and extends between its bearing block and a fixed stop 17 on the respective frame mem her 9.

In the drawings the eccentric operating roller 16 is formed integral with and intermediately of the length of a driving shaft 18, but it may, if desired, consist of a separable sleeve adapted to be fixed on said shaft. In any case, the roller 16 is eccentric to the axis of the driving shaft 18 and rotates therewith. The driving shaft may he supported by bearings 19 secured to the frame members 9, and may carry flywheels 21. One of the flywheels is omitted from Figure 1 for convenience of illustration. The driving shaft may be connected to a source of power by any suitable means whereby it. may be rotated at the required speed in the direction indicated by the arrow in Figure 1.

The crushing member 3 as previously stated preferably consists of a roller, as shown in the drawings. This roller is idly mounted but during the approach or inward moy ement of the crushing roller 2, it is rotated in the direction of the arrow (Fig. 1). The roller 3 may have integral stub axles 22 projecting from its ends, or it may be of sleeve form and mounted upon an axle between the ends thereof. The stub axles 22 are shown accommodated in bearings 23 attached to the frame members 9.

To readily permitsideward adjustment of the roller 3 in relation to the roller 2 and thus enable materials of uirying size to be treated and to allow variation in the degree of pulverization effected by the crushing rollers, the frame members 9 may have longitudinally elongated slots 24 to freely ac commodate bolts 26 which hold the bearings 23 to the frame members 9, further slots 27 being formed inthe latter to pass the stub axles 22. \Vcdges 2S and co-acting lugs or stops 29 may also be provided to etlect sideward adjustment of said roller 3. The immeral 31. indicates packing strips interposed between the wedges and the bearings 23.

Countersunk holes may be formed in the frame members 9, or in plates 32 disposed at the insides thereof, to accommodate the heads of the bolts for holding the various bearings and other parts to said frame members.

The roller 16 gives to the roller 2 a motion of rotation and translation. \hen material which is to be crushed wedges between the rollers 2 and 3 thcrel); tending to pre vent rotation of these rollers, the rollers to give pure translation to the roiler 2 and crushes this material. This reduces the triction between the rollers 2 and 23 allowing the roller 16 to again impart rotation to the roller 2 and allow the crushed material to drop between rollers 2 and I and the said roller will continue to rotate until the 11121 terial again wedges the rollers and prevents rotation, the roller 16 then causes roller 2 to move against roller 3 again crushing the material.

Therefore the material to be reduced may be fed, from a hopper or the like, between the crushing members 2 and 3 which subject the material to a combined rolling and percussive action by which it is effectively pulverized. An outlet or delivery chute may be disposed beneath the crushing members to conduct the reduced material to a discharge site.

Having now described my invention what; I claim as new and desire to secure by Letters Patent is 1. Improvements in crushing or pulverizing machines, comprising in combination, a crushing member consisting of a. roller, a co-operating crushing member opposed to said crushing roller, and 1 eans for rotating said roller and simultaneously reciprocating it towards and from the other crushing member in alignment with the axes ot the crush ing members, whereby the material to be treated is reduced by a combined rolling and percussive action as it passes between said opposed crushing members.

2. Improvements in crushing or pulverizing machines, comprising in combination, a crushing member consisting of a roller, a cooperating crushing member opposed to said roller, and operating means for rotating said roller and simultaneously rta'i nm'ating it to wards and from the other crushing member, said operating means including an eccentric roller adapted to contact with the periphery of said crushing roller at the side thereof opposite that at which the co-operating crushing member is located whereby material fed between said crushing members is reduced by a combined rolling and percus sive action.

Improvements in crushing or pulverizing machines, comprising in combination, a first crushing roller a secoi'id crushing roller arranged adjacent and at one side of said first roller. an eccentric operatim element located at the other side of said hrst roller, whereby the latter is reciprocated towards and from said second roller. and resilient means for maintaining the first roller in driving engagement with said eccentric operating element, for the purp se speciliei'l.

t. Improvements in crushing or pulverizing machines. comprising in combination, a first crushing roller a second crushing roller, means for supporting said second crushing roller so that it mav rotate idly adjacent; and at one side of said first roller, an ecccn trio driving roller located at the other side of said first roller, whereby the latter is reciprocated towards and from said second roller, and spring means adapted to maintain said first roller in driving engagement with said eccentric roller and to yieldingly oppose the motion of said first crushing roller towards said second crushing roller for the purpose specified.

5. ln'iprovements in crushing or pulverizing machines, comprising in combination, a crushing member in the form of a roller, a second crushing member disposed adjacent and at one side of said roller, and means for simultaneously rotating and causing relative sideward reciprocation of said crushing roller, whereby material fed between the latter and its cooperating crushing member is reduced by a combined rolling and percussive action.

(5. An improved crushing or pulverizing machine, comprising in combination, a framework, two co-operating crushing members including a roller, bearings for rotatably supporting said roller, guidtwvays formed in said framework for slidably accommodating said hearings to allow the roller to be moved sidcwardly towards and from the co-operating crushing member, means on said framework for stationarily supporting said co-operating crushing member at one side of said roller, an eccentric operating clement located at the other side of said crushing roller, and adapted to ro tate said roller by frietional contact, and resilient means adapted to maintain said roller in driving engagement with said eccentric operating element and to yieldingly oppose sideward motion of said roller to wards its co-operating crushing member, for the purpose specified.

7. An improved crushing or pulverizing machine, comprising in combination, a framework, first and second crushing rollers, bearings for rotatably supporting said first roller, guides on said framework for slidably accommodating said bearings to permit the first roller to be reciprocated towards and from said second roller bearings on said framework for supportin said second roller at one side of the first roller, an eccentric driving roller located at the other side of said first mentioned crushing roller, and spring means arranged to maintain said first mentioned crushing roller in close engagement with the periphery of said eccentric roller.

8. An improved crushing or pulverizing machine, comprising in combination, a framework, a crushing roller, bearings -l'or rotatably supporting said roller, horizontal guide members on said framework for slidably acconimodating said bearings, an eccentric driving roller located at one side of said crushing roller, spring means acting on said bearings so as to maintain said crushing roller in driving engagement with said eccentric roller, and a second crushing roller idly mounted on said framework and extending adjacent said first mentioned crushlng roller at that side thereof which is re mote from said eccentric driving roller, for the purpose specified.

9. An improved crushing or pulverizing machine, comprising in combination, a framework, a crushing roller, bearings for rotatably supporting said roller, horizontal guide members on said framework for slidably accommodating said bearings, an eccentric driving element. located at one side of said crushing roller, spring means adapted to maintain said crushing roller in driving engagement with said eccentric driving element, a second crushing roller idly mounted on said framework and extending adjacent said first mentioned crushing roller at that side thereof which is remote from said eccentric driving roller, and means for adjusting the position of said second crushing roller sidewardly in relation to said first crushing roller, for the purpose specified.

In testimony whereof, I atfix my signature.

\VALTER REGINALD HUME. 

